The new custom-made Italian pro-audio subwoofer driver enables the P15 to achieve improved low-frequency extension, higher continuous and peak output levels, and a greater level of articulation, according to the company. The new version of the P15 is shipping now worldwide, and its price remains unchanged at a suggested U.S. retail price of USD $5,999.

Manufactured for Procella by a leading Italian pro audio manufacturer, the new long-throw 15 inch woofer has a 3 inch voice coil and uses high-efficiency Neodymium magnets, producing a high level of output, with increased peak capability, in comparison to the original P15.

The P15's bass response extends below 20 Hz and the speaker's maximum output is 127 dB at 50 Hz. The P15 is designed for medium-to-large sized rooms up to about 3,000 cubic feet. Wide and shallow in design to allow for placement against walls or built into walls, its profile is only 8.7 inches / 220mm deep. Each of its dual 15 inch subwoofer drivers is driven by its own 350 watt onboard amplifier, enabling the subwoofer to produce 127 dB of output at 50 Hz, with low frequency extension to well below 20 Hz.

"Through our ongoing research and design effort, we developed a new 15 inch driver design that we can better interface with the P15's power amplifiers. Our goal was to achieve, within the P15's output capabilities, performance comparable to the our flagship P18 dual 18 inch subwoofer, and we are very pleased with the result," said Anders Uggelberg, founding partner and lead designer for Procella Audio.

"The new drivers have a lower resonant frequency and a smoother impedance curve, and in many are ways very similar to the P18's 18 inch drivers. The new configuration allows for even greater output, both on a steady-state basis and for dynamic peaks, and we've found that the benefits are particularly significant for customers with 110V and 100V line voltages. The new driver brings the performance of the P15 even closer to that of the P18, with the main difference now being ultimate playback level and dynamic range."

Uggelberg, who is a THX trained and certified cinema designer with over 300 cinema and professional studio designs to his credit, has designed each Procella Audio speaker model.